Detections
Analytics
Linux Distros Unpatched Vulnerability : CVE-2026-22693
medium Nessus Plugin ID 282558
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Synopsis
The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.Description
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.- HarfBuzz is a text shaping engine. Prior to version 12.3.0, a null pointer dereference vulnerability exists in the SubtableUnicodesCache::create function located in src/hb-ot-cmap-table.hh. The function fails to check if hb_malloc returns NULL before using placement new to construct an object at the returned pointer address. When hb_malloc fails to allocate memory (which can occur in low-memory conditions or when using custom allocators that simulate allocation failures), it returns NULL. The code then attempts to call the constructor on this null pointer using placement new syntax, resulting in undefined behavior and a Segmentation Fault. This issue has been patched in version 12.3.0. (CVE-2026-22693)
Note that Nessus relies on the presence of the package as reported by the vendor.
Solution
There is no known solution at this time.See Also
https://access.redhat.com/security/cve/cve-2026-22693
Plugin Details
Severity: Medium
ID: 282558
File Name: unpatched_CVE_2026_22693.nasl
Version: 1.6
Type: local
Agent: unix
Family: Misc.
Published: 1/10/2026
Updated: 1/30/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 2.2
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2026-22693
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 4.9
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-javadoc-zip, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-devel, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:redhat:enterprise_linux:mingw32-harfbuzz-static, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-src-fastdebug, p-cpe:/a:centos:centos:java-17-openjdk-demo, p-cpe:/a:centos:centos:java-17-openjdk-demo-slowdebug, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:centos:centos:java-21-openjdk-src-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-crypto-adapter-fastdebug, p-cpe:/a:centos:centos:java-21-openjdk-fastdebug, p-cpe:/a:centos:centos:java-21-openjdk-jmods-fastdebug, p-cpe:/a:centos:centos:java-25-openjdk-demo-fastdebug, p-cpe:/a:centos:centos:java-21-openjdk-javadoc, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-static-libs-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-devel-fastdebug, p-cpe:/a:centos:centos:java-25-openjdk-fastdebug, p-cpe:/a:centos:centos:harfbuzz, p-cpe:/a:centos:centos:mingw64-harfbuzz-static, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-demo-slowdebug, p-cpe:/a:centos:centos:java-25-openjdk-devel, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-headless-slowdebug, p-cpe:/a:centos:centos:java-21-openjdk-demo, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-demo-fastdebug, p-cpe:/a:centos:centos:java-17-openjdk-devel-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-static-libs-fastdebug, p-cpe:/a:centos:centos:java-17-openjdk-jmods-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-src-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-javadoc, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-demo-fastdebug, p-cpe:/a:centos:centos:java-21-openjdk-javadoc-zip, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-javadoc-zip, p-cpe:/a:centos:centos:java-25-openjdk-crypto-adapter-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-slowdebug, p-cpe:/a:centos:centos:java-25-openjdk-javadoc-zip, p-cpe:/a:centos:centos:java-25-openjdk-jmods-fastdebug, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-devel-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-fastdebug, p-cpe:/a:redhat:enterprise_linux:mingw32-harfbuzz, p-cpe:/a:centos:centos:firefox, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-demo-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-demo-fastdebug, p-cpe:/a:centos:centos:java-21-openjdk-headless, p-cpe:/a:centos:centos:java-25-openjdk-src, p-cpe:/a:redhat:enterprise_linux:firefox-x11, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-src-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-headless-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-devel, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-javadoc-zip, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-demo, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk, p-cpe:/a:centos:centos:java-21-openjdk-demo-slowdebug, p-cpe:/a:centos:centos:java-17-openjdk, p-cpe:/a:centos:centos:java-17-openjdk-headless-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-src-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-fastdebug, p-cpe:/a:centos:centos:java-21-openjdk-devel-slowdebug, p-cpe:/a:centos:centos:java-25-openjdk-static-libs-slowdebug, p-cpe:/a:centos:centos:java-17-openjdk-jmods, p-cpe:/a:centos:centos:java-17-openjdk-src-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-jmods-fastdebug, p-cpe:/a:canonical:ubuntu_linux:harfbuzz, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-jmods, p-cpe:/a:centos:centos:java-17-openjdk-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-jmods-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-devel-slowdebug, p-cpe:/a:centos:centos:java-21-openjdk-static-libs-slowdebug, p-cpe:/a:redhat:enterprise_linux:thunderbird, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-static-libs, p-cpe:/a:centos:centos:harfbuzz-devel, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-demo, p-cpe:/a:centos:centos:java-17-openjdk-devel-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-crypto-adapter, p-cpe:/a:centos:centos:java-21-openjdk, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-headless-fastdebug, p-cpe:/a:centos:centos:java-25-openjdk-static-libs-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-devel-fastdebug, p-cpe:/a:redhat:enterprise_linux:mingw64-harfbuzz, p-cpe:/a:centos:centos:java-17-openjdk-static-libs-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-jmods-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-crypto-adapter-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-javadoc, p-cpe:/a:centos:centos:java-21-openjdk-demo-fastdebug, cpe:/o:canonical:ubuntu_linux:25.04, p-cpe:/a:redhat:enterprise_linux:harfbuzz-icu, p-cpe:/a:centos:centos:java-25-openjdk-demo-slowdebug, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:redhat:enterprise_linux:firefox, p-cpe:/a:centos:centos:java-17-openjdk-src, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-static-libs-slowdebug, p-cpe:/a:centos:centos:java-17-openjdk-fastdebug, cpe:/o:debian:debian_linux:11.0, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-headless-slowdebug, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:centos:centos:java-25-openjdk-slowdebug, p-cpe:/a:centos:centos:java-25-openjdk-jmods, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-javadoc, p-cpe:/a:centos:centos:java-25-openjdk-headless-fastdebug, p-cpe:/a:centos:centos:java-25-openjdk-devel-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-devel-fastdebug, p-cpe:/a:centos:centos:firefox-x11, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-headless, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-static-libs-fastdebug, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:java-25-openjdk-static-libs, p-cpe:/a:debian:debian_linux:harfbuzz, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-jmods, p-cpe:/a:centos:centos:java-17-openjdk-static-libs, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-jmods-slowdebug, p-cpe:/a:centos:centos:java-25-openjdk-crypto-adapter-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-devel, p-cpe:/a:centos:centos:java-25-openjdk-headless-slowdebug, p-cpe:/a:redhat:enterprise_linux:harfbuzz-devel, p-cpe:/a:centos:centos:java-21-openjdk-devel-fastdebug, p-cpe:/a:centos:centos:mingw32-harfbuzz, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-static-libs, p-cpe:/a:centos:centos:java-21-openjdk-headless-slowdebug, p-cpe:/a:centos:centos:java-21-openjdk-jmods, p-cpe:/a:centos:centos:java-25-openjdk-jmods-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-devel-slowdebug, p-cpe:/a:centos:centos:java-25-openjdk-crypto-adapter, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:centos:centos:java-17-openjdk-headless, p-cpe:/a:centos:centos:mingw64-harfbuzz, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:centos:centos:java-25-openjdk-src-fastdebug, p-cpe:/a:centos:centos:java-21-openjdk-slowdebug, p-cpe:/a:centos:centos:java-25-openjdk-devel-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-headless, p-cpe:/a:centos:centos:java-17-openjdk-devel, p-cpe:/a:centos:centos:java-17-openjdk-javadoc-zip, p-cpe:/a:centos:centos:java-17-openjdk-src-slowdebug, p-cpe:/a:centos:centos:java-21-openjdk-devel, p-cpe:/a:centos:centos:java-21-openjdk-headless-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-headless-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-slowdebug, cpe:/o:redhat:enterprise_linux:8, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-demo-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-src, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-static-libs-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-demo, p-cpe:/a:centos:centos:java-17-openjdk-headless-slowdebug, p-cpe:/a:centos:centos:java-17-openjdk-static-libs-slowdebug, p-cpe:/a:centos:centos:java-21-openjdk-src, p-cpe:/a:redhat:enterprise_linux:harfbuzz-cairo, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-src, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-src-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-src-slowdebug, p-cpe:/a:centos:centos:java-21-openjdk-jmods-slowdebug, p-cpe:/a:centos:centos:java-21-openjdk-src-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-src, p-cpe:/a:redhat:enterprise_linux:harfbuzz, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-jmods-fastdebug, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:java-25-openjdk-src-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-headless, p-cpe:/a:centos:centos:java-17-openjdk-jmods-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-static-libs-slowdebug, p-cpe:/a:centos:centos:harfbuzz-cairo, p-cpe:/a:centos:centos:java-25-openjdk, p-cpe:/a:redhat:enterprise_linux:java-25-openjdk-static-libs, p-cpe:/a:centos:centos:thunderbird, p-cpe:/a:centos:centos:harfbuzz-icu, p-cpe:/a:centos:centos:java-21-openjdk-static-libs-fastdebug, p-cpe:/a:centos:centos:java-25-openjdk-demo, p-cpe:/a:centos:centos:mingw32-harfbuzz-static, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-jmods, p-cpe:/a:centos:centos:java-21-openjdk-static-libs, p-cpe:/a:centos:centos:java-17-openjdk-demo-fastdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-headless-slowdebug, p-cpe:/a:centos:centos:java-25-openjdk-javadoc, p-cpe:/a:redhat:enterprise_linux:mingw64-harfbuzz-static, p-cpe:/a:centos:centos:java-17-openjdk-javadoc, p-cpe:/a:centos:centos:java-25-openjdk-headless, p-cpe:/a:redhat:enterprise_linux:java-21-openjdk-jmods-slowdebug, p-cpe:/a:redhat:enterprise_linux:java-17-openjdk-fastdebug
Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 1/10/2026
Reference Information
CVE: CVE-2026-22693